Senior moment?

[RobinC]

The sight line and bore line converge, and cross at less than 8 yds.

[vbull]

The sight line and bore line converge, and cross at less than 8 yds.

Wouldn't it run out of puff or pellet hit the ground before 30 yds then Robin ? This thread is hurting my head

[Jimny4x4]

If you spread your legs , bend over and take aim shooting backwards thru yur legs , what effect would gravity have on pellet trajectory upside down , as it leaves the muzzle to a 10m-15m zero then on to 25m , then 40m in general ? And specifically this particular weird Haenel ? Answers on a postcard .

[RobinC]

Wouldn't it run out of puff or pellet hit the ground before 30 yds then Robin ? This thread is hurting my head

The rear sight is clearly higher than the front in relation to the bore line, so on aim the barrel line is pointing up. You are just considering decreasing velocity and pellet drop, but its clearly being pointed up which compensates for that. For its first part of its trajectory its climbing as its pointed up, it will probably only stop climbing and start dropping after 40 yds or more. At 8 yds you still need to aim down to hit your target, and as the barrel is pointed up in relation to the sight line its still shooting high at 30 yds. If you go out to 50 mts you may probably find that pellet drop is then coming into play and the aim point will likely be the same as 30yds or less if the drop is really coming into play.

If you shoot closer than 8yds you'll find the cross over point. OR to do it technically, measure the front sight above bore centre, and measure the rear sight above bore centre that will give you the picture of bore line and sight line, I think from what you have described the bore line and sight line will cross at about at certainly less than 8 yds with bore line pointing up and the sight line down, if in doubt then draw it out, it should be obvious then.

As an example I have just re zeroed two 6 mmBR 300 mt rifles, I have done it as they have both had the sight length increased with having barrel tubes fitted. Both are identical, same barrel, and same length, same sights, and same ammo. Before fitting the tubes both were perfectly zeroed at 300 mts. BUT, one (mine) has 15mm of sight raising blocks fitted front and rear, my wife's has none just the sights. When I fitted Identical tubes to both we re zeroed on zero cards at 25 mts, but hers needed only a click or two, mine with the sight raising blocks needed masses of adjustment and was shooting two inches low! That was because my bore line and sight line were converging and by fitting a tube I altered the sight line and the relation to the front and back sight. This is the same effect as you are getting with your air rifle.

And the further apart the bore line and sight line are the more the effect is!

Sorry, that has probably really done in your head now!!